Node status and synchronization doc

docs/masternode/node-status-sync.md

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+# Check Node (and Masternode) Status and Synchronization
+
+Once you have started a TomoChain full-node to begin synchronizing (either via tmn or docker or native), we want to see its status and watch its progress.
+There are a number of tools to do this, which are introduced below.
+
+---
+
+The most important commands are listed here and explained further below:
+```shell
+tmn status    # Shows whether tomo is running or not
+tmn inspect   # Shows more info on running tomo instance
+tmn --help    # See other commands for tmn
+tmn update    # Update the tmn client (not a sync command)
+
+docker exec $(docker ps -q -f "name=tomochain") tomo attach /tomochain/data/tomo.ipc --exec "eth.blockNumber"
+docker exec $(docker ps -q -f "name=tomochain") tomo attach /tomochain/data/tomo.ipc --exec "net.peerCount"
+
+https://stats.tomochain.com/
+```
+
+---
+
+First, from the command line of the node, run the below commands.
+The first two commands show if the `tomo` binary is running, what its name is, what its docker ID is, and its Coinbase address.
+The Help command shows other available `tmn` commands.
+These do not reflect that the node is synchronized with the network, nor that it is a masternode, nor that it is getting rewards.
+
+```shell
+tmn status
+tmn inspect
+tmn --help
+```
+
+When you first start your node, it begins to synchronize blocks from 0, downloading them from other nodes.
+To see which block your masternode is on, you can run the following blockNumber command.
+The subsequent peerCount command tells you how many other nodes you are connected with.
+
+```shell
+docker exec $(docker ps -q -f "name=tomochain") tomo attach /tomochain/data/tomo.ipc --exec "eth.blockNumber"
+docker exec $(docker ps -q -f "name=tomochain") tomo attach /tomochain/data/tomo.ipc --exec "net.peerCount"
+```
+
+With a few peers and blocks, you should now be able to see your newly-synchronizing node listed on TomoChain's official "Stats" webpage.
+It could take 10-30 mins, so be patient.
+
+* https://stats.tomochain.com/
+
+Being on the "stats" page does not mean your node is a masternode; just that it is a node (more precisely, a fullnode).
+There can be non-masternode nodes, even once synchronized.
+Why would any one do that?
+A dApp developer may want to keep a synchronized chain so that they can easily interact with the blockchain - yet they have no intent to be a masternode.
+
+You should also become familiar with how to update tmn.
+The below command updates your `tomo` binary to the latest version.
+This stops and restarts the process, so no need to do it now.
+If you want to be up-to-date, watch the TomoChain telegram chat for announcement and updates.
+
+```shell
+tmn update
+```